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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Anthropic logo
Anthropic
Medium
Product Manager

Behavioral: Resolving Competing Demands From Stakeholders With Different Goals

Tell me about a time when the stakeholders you depended on wanted different things from you or your product. How did you work through it, and how did ...

Behavioral & LeadershipCommunication & StakeholdersConflict & Collaboration
1
0
10 people solved
Jun 11, 2026
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Bloomberg, Amazon, TCS

Medium
Software Engineer

Most Vowels in a Fixed-Length Substring

Problem Return the largest number of vowel occurrences in any contiguous length-k substring of s. The vowels are exactly a,e,i,o,u. `cpp class Solutio...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
9 people solved
Google logo
GoogleAmazonMetaMicrosoft

Also asked at Meta, Microsoft

Medium
Software Engineer

Optimal First-Player Stones With a Growing Take Limit

Problem Positive stone piles are arranged in a row. Alice starts, then players alternate taking the first X remaining whole piles, with 1 <= X <= 2*M ...

Coding & AlgorithmsDynamic Programming
1
0
9 people solved
Stripe logo
Stripe
Hard
Software EngineerSenior+ Locked

Implement Validation and String Compression

This question evaluates string processing, input validation, tokenization, hierarchical string manipulation, and algorithmic complexity analysis skill...

Coding & AlgorithmsParsing & InterpretersData Cleaning & Wrangling
12
0
197 people solved
Mar 1, 2026
Amazon logo
Amazon
Hard
Applied ScientistNew Grad

Explain Core ML Interview Concepts

You are in a phone screen for an applied scientist / machine-learning engineer role and are asked to verbally explain a set of machine-learning fundam...

Machine LearningML FundamentalsNeural Networks & Training
260
0
2135 people solved
Apr 27, 2026
Anthropic logo
AnthropicOpenAIApplied Intuition

Also asked at Applied Intuition, Meta, Amazon, Google, Microsoft

Hard
Software Engineer

Find Duplicate Files by Content

Problem You are given a list of directory descriptions. Each description contains a directory path followed by one or more file records of the form fi...

Coding & AlgorithmsArrays & StringsParsing & Interpreters
5
0
85 people solved
Stripe logo
Stripe
Medium
Software Engineer

Process auth requests with fraud rules

Question Implement a function that, given a list of Authorization Requests (timestamp_seconds, unique_id, amount, card_number, merchant), outputs a hu...

Coding & Algorithms
99
0
432 people solved
Jul 29, 2025
Microsoft logo
Microsoft
Hard
Software Engineer

Rearrange a sequence into the next greater permutation in lexicographic order

Given a list of integers, rearrange it into the next arrangement in lexicographic order: the smallest arrangement of the same values that is strictly ...

Coding & AlgorithmsArrays & Strings
1
0
14 people solved
Aug 5, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

How you use AI to work faster and raise your team's efficiency

Every round of this infrastructure loop included the same question: how do you use AI tools to work more efficiently day to day, and have you done any...

Behavioral & LeadershipAI-Assisted DevelopmentLeadership & Influence
0
0
7 people solved
Sep 11, 2026
OpenAI logo
OpenAI
Easy
Software Engineer

Implement Chat Event Counter

Design an in-memory counter for chat activity. You need to implement a class with the following two methods: `text processEvent(userId: string, chatId...

Coding & Algorithms
16
0
154 people solved
Apr 10, 2026
Netflix logo
Netflix
Medium
Software Engineer

Design Rolling-Window Ad Frequency Capping

Design a frequency-capping service for an advertising platform. The ad platform receives ad requests for users and must decide whether a candidate ad,...

System DesignRate LimitingAds Systems
31
0
219 people solved
Apr 17, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Discuss culture and mission alignment

Behavioral: Culture & Mission Alignment Role: Software Engineer · Stage: Onsite (Virtual Onsite) · Format: Panel behavioral round Context You are inte...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
143
1
989 people solved
Sep 6, 2025
Xiaohongshu logo
Xiaohongshu
Medium
Software Engineer Locked

Maximum Profit from One Stock Purchase and a Later Sale

Given one stock's price on each of several consecutive days, compute the maximum profit from buying one share and selling it on a strictly later day, ...

Coding & AlgorithmsArrays & Strings
2
0
32 people solved
Aug 28, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design mkdir and ls for a Basic File System

Review a clean object model and path-resolution contract for implementing mkdir and ls in a basic file system.

Software Engineering Fundamentals
2
0
38 people solved
Aug 22, 2026
Mercor logo
Mercor
Easy
Software Engineer

Design a Deliberately Inefficient Sorting Algorithm and Analyze Its Complexity

Design a sorting algorithm that is as inefficient as you can make it while still being correct: given a list of n elements, it must return them in sor...

Software Engineering FundamentalsSorting
3
0
22 people solved
Aug 8, 2026
Airbnb logo
Airbnb
Medium
Product Manager

Airbnb Product Sense: Coordinating a Group of Travelers From First Idea to Booked Stay

You are a product manager at Airbnb. Design a feature that makes it easier for people traveling as a group, such as friends sharing a house or an exte...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
16 people solved
Sep 13, 2026
Datadog logo
Datadog
Easy
Software EngineerSenior+ Locked

Engineering Manager Interview: Your Technical Contribution and an Annoying Teammate

A hiring manager conversation for an engineering manager role: introduce yourself, explain your own technical contribution to a project you led, and d...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
6
0
66 people solved
Sep 5, 2026
Netflix logo
Netflix
Medium
Software Engineer

Design a thread-safe key-value store

You are working on infrastructure for an AI platform. Inside a single process, many worker threads need to share a simple in-memory key–value store; a...

Software Engineering FundamentalsConcurrencyData Structure Design
94
1
803 people solved
Nov 10, 2025
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, X (Twitter)

Medium
Software Engineer

Find the Fewest Valid Single-Character Gene Mutations

Find the Fewest Valid Single-Character Gene Mutations A gene is a string of eight characters from A, C, G, and T. One mutation changes exactly one cha...

Coding & AlgorithmsGraphsStacks & Queues
1
0
12 people solved
J.P. Morgan logo
J.P. Morgan
Medium
Machine Learning Engineer Locked

Design an Entitlement-Aware Agentic Portfolio Workflow

Design an entitlement-aware agentic workflow that can answer portfolio requests while keeping authorization outside the model. Evaluation centers on o...

System Design
8
0
95 people solved
Aug 5, 2026
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